The corporate venturing unit reportedly co-led the round with Technology Crossover Ventures at a $30bn valuation, bringing Airbnb's overall funding to $3.25bn.

US-based short-term accommodation marketplace Airbnb has raised $850m in a funding round co-led by internet and technology conglomerate Alphabet through its Google Capital unit, the Wall Street Journal reported yesterday.

The round was co-led with growth capital firm Technology Crossover Ventures and values Airbnb at $30bn, according to people close to the deal.

About $200m of Airbnb employee stock was sold as part of the transaction, but at a valuation mirroring the $25.5bn ­at which the company raised money last…